Combination tube expander, beader, and cutter



EM; 25,1923. mwz

. A. J. BARANOFF I COMBINATION TUBE EXPANDER, HEADER, AND CUT TER Filed Dec. 1, 1-922 I I l I I I l I l ANDRIAN, J'. B '1:

NOFF, OF LOS ANGELES, CALIFORNIA.

COMBINATION" TUBE EXPANDER, BEADER, AND CUTTER.

Application filed December 1, 1922. Serial No. 604,412.

To all whom it may concern.

Be it known that I ANDRIAN J. BARANOFF,

a citizen of the United States, residing at Los Angeles, in the county of Los An'geles and State of California, have invented new and useful Improvements in Combination Tube Expanders, Beaders, and Cutters, of which the following is a specification.

My invention is a hammerless combination tube expander, header and cutter, particularly useful for expanding and beading a tube, for securing the end of the tube in an opening in a plate, and for cutting the tube the proper length from said plate.

The main object of my invention is to. provide a device of'this character which will be simple in construction and practlcal and efficient in operation.

Other objects and advantages will appear hereinafter and while I show herewith and will describe a preferred form of construc-' tion, I desire to be understood that I do not limit myself to such preferred form, but that various changes and adaptations may be made therein without departing from the spirit of my invention as hereinafter claimed.

One form of my invention is illustrated in the accompanying drawing in which:

Fig. 1 is a vertical longitudinal section of my invention and a tube and plate, with my invention in position in said tube ready to form the head on the end of the tube against the top of the. late and to expand the tube against the un er side of the tube to secure the end of the tube in the aperture in said plate.

Fig. 2 is a view similar'to 1 but with my invention in position after having formed the bead on the tube and having expanded the tube.

Fig. 3 is a bottom plan view of the header.

Fig. 4 is a cross section of my invention taken on line 44 of Fig. 1 showing the expanders.

Similar reference characters refer to similar parts throughout the several views.

In the drawing is shown a. plate A pro- 'vided with an aperture (1, and a tube 1: 3, one end of which being fitted in said aperture and projecting slightly above said plate.

My invention consists primarily of a spindle C, an expander D, a header E, and a cutter F. The spindle C extends through a tubular member 1 and has an external thread 2 on its upper portion which engages an internal thread 3 in the upper part of said support whereby said spindle when turned one way or the other is moved up or down within said support. On said spindle at a dis tance below thread 2 is formed a conical cam 4, the base of whichis larger in diameter than the spindle, and it tapers downwardly to the diameter of the spindle. The portion 6 of the spindle between the thread 2 and the cam 4 is square and is smaller in diameter than the upper threaded part of the spindle. The header E includes a head 7 and header rollers 8, preferably four in number. Said headhas a central square opening 9 through which extends the spindle square portion 6. A coil sprin'g 10 surrounds the square portion 6 of the spindle within the tubular member 1, bearing at its lower end on the head 7 and at its upper end against a shoulder 11 at the lower end of thread 2, said spring forming a cushion for the header and normally urging the header head downwardly against the upper part of cam 4. The header head has an upstanding sleeve 7 a which slides on the lower portion of the tubular member 1. The header rollers 8 are journaled in brackets 12 depending from the lower side of the header head 7; said brackets being dovetailed at their upper ends to' engage corresponding radial grooves 12 in the under side of the header head 7 whereby the rollers ma be moved in and out to engage tubes of di erent diameters.

A nut 13 screws on the upper end ofthe thread 2 and is secured on the upper end of tubular member 1. The upper end 14 of the spindle O is square to receive the chuck of a motor G for turning same. The lower end portion 15 of the spindle is square and the portion 16 of the spindle between said lower end portion and the cam 41: is provided with a thread. 17. A nut 18 screwson the thread 17, on the upper end of which nut are formed a plurality of upstanding arms 19 spaced equidistant apart around the nut. To the upper ends 'of the arms 19 are connected one end of links 20 respectively. A plurality of expanding dies 21 fit close together around the spindle. hearing at their upper ends against the cam 4 and provided respectively with slots 22 to receive the other ends respectively of the links 20, (\yhich ends are connected respectively to said ies.

The dies 21 have expanding surfaces 23 on their lower ends on the outer sides thereof for engaging and expanding the tube B. The nut 18 is provided with an'external thread 24 on which screws a split nut 25, the sections of which nut are secured together by bolts 26. The split nut 25 is formed with an internal annular flange 27 at its lower end on which flange rests an external annular flange 28 on the upper end of the cutter cone 29, whereby said cone is supported by said nut: said cone being provided with a longitudinal square bore 30 through which extends the lowersquare portion 15 of the spindle (l. The cone 29 is provided with a plurality of longitudinal dovetailed grooves 231 and the cutter knives 32 are dovetailed at their inner ends to engage said grooves, there being a ring 33 surrounding said cone provided with slots 34 through which said knives extend; theouter ends of said knives being edged to cut the tube B- The operation of myinvention is as follows: The lower portion of the spindle, together with the cutter and expander are placed within the tube B with the rollers 8 resting on the upper edge of said tube. A

motor G is applied to the upper square end 14 of the spindle, by means of which motor said spindle is rotated and pushed further into the tube B compressing spring 10,. during which operation the nut 18 moves upwardly on the spindle thread 17 together with the nut 25 and cutter F, and the dies 21 are forced outwardly by the cam 4, expand ing the tube at the under side of plate A (Fig. 2), while the beader is rotated and the spring-l0 expanded, forcing the beader' downwardly and causing the beader rollers 8 to turn over the upper edge of the tube B against the upper side of plate A, thus beading the tube, after the tube is expanded, and firmly securing the end of the tube in said plate. As the cutter moves upwardly the rotating cone 29 forces the rotating knives 32 outwardly which cuts off the tube the desired length. The rotation of the spindle is messes then reversed, which causes the nuts 18 and 25 and cutter cone 29 to move downwardly and allows the expanding dies 20 and the cutter knives 32' to move inwardly, whereupon the device inay be withdrawn upwardly from the tube B. The tension and cushion of the spring 10 may be adjusted by turning the nut 13 together with the tubular mem- Having described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a device as disclosed, a spindle, an expander mounted on said spindle for expanding the tube when the spindle is rotated and forced into the tube, a' header on said spindle for beading said tube when it is expanded, and a cutter including a cone mounted on said spindle to rotate therewith and to move upwardly thereon as the spindle is rotated and forced into the' tube, and knives mounted on said cone to be forced outwardly and rotated by said cone when the cone is rotated and moved upwardly by the spindle.

2. In a device as disclosed, a. spindle, an expander comprising a nut screw seated on said spindle, expanding dies, means connectin said nut and said dies, and a cam on said splndle for engaging said dies and forcing .them. outwardly together with the action of when the cone moves upwardly with-said nut.

ANDRIAN J. BARANOFF. 

